H3C Technologies H3C S10500 Series Switches - Manual (Page 115)

104
Figure 45 Convert a MAC address into an EUI-64 address-based interface identifier
• On a tunnel interface
The lower 32 bits of the EUI-64 address-based interface identifier are the source IPv4 address of the
tunnel interface. The higher 32 bits of the EUI-64 address-based interface identifier of an ISATAP tunnel
interface are 0000:5EFE, whereas those of other tunnel interfaces are all zeros. For more information
about tunnels, see the chapter “Tunneling configuration.”
• On an interface of another type
The EUI-64 address-based interface identifier is generated randomly by the device.
IPv6 neighbor discovery protocol
The IPv6 Neighbor Discovery (ND) protocol uses five types of ICMPv6 messages to implement the
following functions:
• Address resolution
• Neighbor reachability detection
• Duplicate address detection
• Router/prefix discovery and address autoconfiguration
• Redirection
Table 9 lists the types and functions of ICMPv6 messages used by the ND protocol.
Table 9 ICMPv6 messages used by ND
ICMPv6 message Type Function
Acquires the link-layer address of a neighbor.
Verifies whether a neighbor is reachable.
Neighbor Solicitation (NS)
message
135
Detects duplicate addresses.
Responds to an NS message.
Neighbor Advertisement
(NA) message
136
Notifies the neighboring nodes of link layer changes.
Router Solicitation (RS)
message
133
Requests an address prefix and other configuration information
for autoconfiguration after startup.
Responds to an RS message.
Router Advertisement (RA)
message
134
Advertises information such as the Prefix Information options and
flag bits.